Automatic car-brake



(No Model.) 2 Sheets-Sheet 2.

, .H.E. OLSON. AUTOMATIC GAR. BRAKE.

No. 531,131. Patented Dec. 18, 1894.

5, a, 59- w v 5f 0 mar ill, 3 ll its UNITED STATES PATENT OFFICE.

HENRY OLSON, OF CHIOAGO, ILLINOIS.

AUTOMATIC CAR-BR'AKE.

SPECIFICATIOR forming part of LettersPatent No. 531,131, dated December18,1894,

I Application filed September 17,1894. Serial No. 523,3l2. (No model.)

To all whom it may concern.-

Be it known that I, HENRY E. OLsoN, a citizen of the United States,residing at Chicago, 1n the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Automatic -Car-Brakes;and I do hereby declare the following to be a full, clear, and exactdescription of the invention,

such as will enable others skilled in the artto which it appertains tomake and use the same.

This invention relates to improvements in self-acting car-brakes, and ismore especially intended for use on freight-cars; the same consisting ofcertain novel features in the construction, arrangement and operation,as

will be hereinafter set forth.

In the drawings :-Figure 1 is a plan, show-- ing the application of thedevice; Fig. 2, a

broken-away transverse section on line 2, Flg. 1, looking in thedirection indicated by the arrow; and Fig. 3, a broken-away longitudinalsection on line 3, Fig. 1.

A may represent an ordinary pair of cartrucks; BB, the brake-beams,located at the respective ends of a car, and B the brakeshoes secured tothe brake-beams and adapted to have frictional contact with thetruckwheels. p

O is a casing or box-like compartment secured to the underside of thecar-bottom or frame 0'. This casing is open at each end and has anair-vane or swinging leaf D located in the continuous passage orextending therethrough, as shown in- Fig. 2. This vane is rigidlysecured to a rocker D, loosely mounted on a pivot-bolt 0. extendingtransversely through the casing O. This provides for a swing-movement ofthe vane D on its pivot in either direction with reference to theinclosing casing.

A clutch-bar E is loosely mounted on the end of a lever, F, that extendsinside of the vane-casing. This clutch-bar is provided with the enlargedpart a (Figs. 2 and 3). which rests upon the upper side of rocker D Thebar E is provided with a shoulderbearing a, and has a balance-weight a;in

' its normal horizontal position when the car is at rest, as shown inFig. 3.

"' A slottedbearing a", secured to the bottom of the car andlocatedinside of the casing 0, provides a support for the inner end of lever-F. *A bracket a", also secured to the bottom of the car, provides afulcrum-bearing a for said lever, and adapts the same tohave a latoralrocking movement in a horizontal plane. To the outer end of lever F isconnected a rod a the opposite end of which is in turn connected to theouter end of a lover I), the opposite end of which is connected to thedrawbar I), as shown in Fig. 1. The lover I) is provided with afulcrum-bearing, as at b so that it will have a corresponding movementwith reference to lever F.

'A second clutch-barG is located directly above (Figs. 2 and 3). thecompanion bar E, and is loosely supported by, and adapted to have anendwise movement in, a pair of guides b b which are bolted to the bottomof the car. The clutch-bar, G, is provided on its inner end with ashoulder-bearing bflcorresponding to theshoulder a on the companion bar.

One end of a rod 1) is connected to the outerend of clutch-bar G; theopposite end being connected to the outer end of a lever b having afulcrum-bearing by dotted lines in Fig. 1. I

To the inner end of lever 11 is connected one end of a rod 6 theopposite end being connected to the inside brake-beam B, as at a", whicharrangement provides for the simultaneous application of both setsofbrakes.

The rod 1) is in two parts; the overlapping joining ends being connectedby a spring (1, so as to have a slight yielding action and avoidbreaking by reason of too much rigidity.

When the car is at rest, the vane, suspended by a hinged connection,will hang in the normal vertical position illustrated in Fig. 3. When inmotion, the vane will be swung backwardly, with reference to thedirection in which the car is moving, by the force of the current of airthat is drawn into the inclosing casing. .Thus the vane will be held atan inclined angle between a vertical and horizontal position while thecar is in motion. When the vane swings back on its pivot, it has b7, asindicated the efiect, through the medium of the rocker D, of raising theclutch-bar E high enough to be imposition to engage with the companionclutch-bar. Now, when the steam, on the engine drawing the train, isshut oil? and the bumpers come together, the clutch-bars or members arethrown into engagement and the brakes automatically applied by means ofthe connections described. When the train comes to a stop, the vane androcker assume the position shown in Fig. 3; the clutch-bars beingdisengaged and the brake-shoes out of contact with the truck-wheels, asshown in Fig. 1.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is- 1. In an automatic car-brake, the combina-3 tion with a casing, open at both ends and se- 1 cured to a car, of anair-vane, pivotally suspended in said casing, a rocker, to which said 1vane is secured, a clutch-bar, a lever, sup-' porting said bar, acompanion clutch-bar,

"and. a rod 5 the draw-bar and brake-mack anism, substantially as setforth.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY E. OLSON.

Witnesses:

L. M. FREEMAN, J. DONALSON.

